Sometimes, a swarm will move on within a few hours, sometimes, it may take a few days. When bees are swarming, they are the least defensive and not very likely to sting,” according to NABA.

Lindsey says the swarms happen when Honey Bees are trying to relocate and create a new hive. She says this happens when a new queen is born or if the hive gets overcrowded.

Killer bees have been spotted in 13 U.S. states: Alabama, Arizona, Arkansas, California, Florida, Georgia, Louisiana, Mississippi, Nevada, New Mexico, Oklahoma, Texas and Utah.